body {
    font-family: Arial;
}
h2{
    text-align: center;
}
form {
    margin: 50px auto;
    width: 600px;
}

input[type="button"] {
    cursor: pointer;
}
table {
    margin-top: 15px;
    border: 1px solid #ddd;
    border-collapse: collapse;
}

table th {
    color: #666;
}
table td,
table th {
    padding: 5px;
    border: 1px solid #ddd;
    text-align: center;
    font-size: 14px;
}